LM317AL-TA3-T

{
  "slug": "lm317al-ta3-t",
  "version": "0.1.0",
  "type": "component",
  "description": "UTC(Unisonic Tech) Linear Voltage Regulators (LDO), TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "lm317al-ta3-t",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm317al-ta3-t.kicad_sym",
    "lm317al-ta3-t.kicad_mod",
    "lm317al-ta3-t.glb",
    "lm317al-ta3-t.step",
    "lm317al-ta3-t.lbr",
    "docs/hero.png",
    "docs/lm317al-ta3-t-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm317al-ta3-t-hero.glb",
    "lm317al-ta3-t-hero.overlay.json",
    "lm317al-ta3-t-etched.glb"
  ],
  "component": {
    "mpn": "LM317AL-TA3-T",
    "manufacturer": "UTC(Unisonic Tech)",
    "package": "TO-220",
    "pin_count": 3,
    "category": "Power Supply Chip",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/cb501f15493bd97dbace25a733dea107.pdf",
    "parts": {
      "symbol": "lm317al-ta3-t.kicad_sym",
      "footprint": "lm317al-ta3-t.kicad_mod",
      "model_3d": "lm317al-ta3-t-hero.glb",
      "model_3d_plain": "lm317al-ta3-t-etched.glb",
      "model_3d_step": "lm317al-ta3-t-etched.step",
      "model_3d_step_plain": "lm317al-ta3-t.step",
      "lbr": "lm317al-ta3-t.lbr"
    },
    "distributor_links": {
      "lcsc": "C5157615"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T23:15:42Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 579 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "ADJ",
        "type": "passive",
        "description": "Adjustment terminal that sets the output voltage via the R1/R2 divider (VOUT=1.25V×(1+R2/R1)+IADJ×R2), with adjustable pin current of 50 µA typ and 100 µA max."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output terminal, adjustable from 1.2V to 37V and supplying output current in excess of 1.5A."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Unregulated input terminal, with a maximum input-output voltage differential of 40V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin names and order come from the ordering table (1=ADJ, 2=VOUT, 3=VIN). The package drawing and pin"
        ],
        "pages_sent": 5,
        "cost_usd": 0.0371,
        "at": "2026-10-22T23:15:33"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/cb501f15493bd97dbace25a733dea107.pdf",
        "pages": 5,
        "sha256": "03e0560656b59da8",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lm317al-ta3-t.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          10.25,
          4.455,
          28.525
        ],
        "zmin_mm": -9.75,
        "centre_offset_mm": 0.932,
        "footprint_binding": "identity",
        "sha256": "7cb065d935df5771f0ba6e48ddd180863a121af76483dad7f18e667a7b68204a",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm317al-ta3-t-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          10.25,
          4.455,
          28.525
        ],
        "zmin_mm": -9.75,
        "centre_offset_mm": 0.932,
        "footprint_binding": "identity",
        "sha256": "1ca92459a6e5d5066506553961db710a282dceafd624a61f2910e551d2549df3",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}